LC
Lillie Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Champaign-County, Illinois
Our Model Tree links this Lillie Clark across the 1930 and 1940 US Censuses in Champaign-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Champaign-County, Illinois |
| Surname | Clark |
| Given Name | Lillie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Urbana City |
| 1935 Residence (County) | Champaign |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Urbana City |
| Est. Birth Year | ~1928 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lillie | Age | Birth yr |
|---|---|---|---|---|
| Rose Clark | Daughter | — | 6 | ~1934 |
| Mabel Clark | Daughter | — | 14 | ~1926 |
| William Clark | Son | — | 15 | ~1925 |
| Eugene Clark | Son | — | 18 | ~1922 |
| Mildred Clark | Daughter | — | 8 | ~1932 |
| Ethel Clark | Head | — | 39 | ~1901 |
| Robert Clark | Son | — | 4 | ~1936 |
| Forest Clark | Son | — | 10 | ~1930 |
| Lillie Clark | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Champaign, Illinois
Daughter, age 3
Champaign, Illinois · implied b. ~1927 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Lilly |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Champaign-County, Illinois
Daughter, age 12
Champaign-County, Illinois · implied b. ~1928 — 9 household members
| Surname | Clark |
| Given Name | Lillie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Urbana City |
| 1935 Residence (County) | Champaign |
| Highest Grade | No 6 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Lillie Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lillie Clark
Daughter · 1940 · age 12 · b. ~1928 · Illinois
★ You are viewing this record
Sibling
Mildred Clark
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Clark
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Clark
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Clark
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Forest Clark
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabel Clark
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Clark
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Champaign-County, Illinois
Open full size
1940 US Federal Census — Champaign-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00765-00956)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry Thomas | 43 | Head | Junk Man | Tennessee |
| 2 | Mary Thomas | 42 | Wife | — | Tennessee |
| 3 | Alva A. Mcwethy | 39 | Head | Brick Mason | Illinois |
| 4 | Gladys Mcwethy | 29 | Wife | — | Illinois |
| 5 | Roy Mcwethy | 9 | Son | — | Illinois |
| 6 | Lyle Mcwethy | 8 | Son | — | Illinois |
| 7 | Treva Mcwethy | 5 | Daughter | — | Illinois |
| 8 | Sylvia Mcwethy | 3 | Daughter | — | Illinois |
| 9 | Darlene Mcwethy | 1 | Daughter | — | Illinois |
| 10 | Leslie L. Outlaw | 44 | Head | Asst. Foreman | Illinois |
| 11 | Lois Outlaw | 32 | Wife | — | Illinois |
| 12 | Lyle Outlaw | 4 | Son | — | Illinois |
| 13 | Donna Outlaw | 2 | Daughter | — | Illinois |
| 14 | Elmer M. Curtis | 68 | Head | Janitor | Iowa |
| 15 | Cora Curtis | 57 | Wife | — | Iowa |
| 16 | Warren L. Curtis | 30 | Head | Painter | Illinois |
| 17 | Nellie Curtis | 28 | Wife | — | Illinois |
| 18 | Jewell Curtis | 11 | Daughter | — | Illinois |
| 19 | Patricia Curtis | 9 | Daughter | — | Illinois |
| 20 | Ethel Clark | 39 | Head | — | Illinois |
| 21 | Eugene Clark | 18 | Son | — | Illinois |
| 22 | William Clark | 15 | Son | — | Illinois |
| 23 | Mabel Clark | 14 | Daughter | — | Illinois |
| 24 | Lillie Clark THIS PERSON | 12 | Daughter | — | Illinois |
| 25 | Forest Clark | 10 | Son | — | Illinois |
| 26 | Mildred Clark | 8 | Daughter | — | Illinois |
| 27 | Rose Marie Clark | 6 | Daughter | — | Illinois |
| 28 | Robert Clark | 4 | Son | — | Illinois |
| 29 | Sam Mahaney | 76 | Head | — | Tennessee |
| 30 | Lula Mahaney | 71 | Wife | — | Mississippi |
| 31 | Guy O. Pritchard | 30 | Head | Common Labor | Illinois |
| 32 | Hazel Pritchard | 30 | Wife | — | Illinois |
| 33 | Berdine Pritchard | 9 | Son | — | Illinois |
| 34 | Jack Pritchard | 5 | Son | — | Illinois |
| 35 | William Maier | 44 | Head | Common Labor | Illinois |
| 36 | Geneva Maier | 35 | Wife | — | Illinois |
| 37 | John Maier | 16 | Son | — | Illinois |
| 38 | Dolores Maier | 14 | Daughter | — | Illinois |
| 39 | Susan Pritchard | 68 | Head | — | Illinois |
| 40 | Enola Solomon | 45 | Head | Janitor | Texas |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)